I'll second the recommendation for Clone Brews and add that if you only have one homebrewing book it should be "Designing Great Beers" by Ray Daniels. While this is not a book of clones, it is essential when you start developing your own recipes, which I have no doubt you will at some point.

I recieved this book as a gift and I frikkin love it. I brewed the Sam Smith Winter Welcome clone a week ago....& I plan on brewing the John Courage Imperial Stout next so that I can pitch it on to this yeast cake. (WYEAST 1084 Irish Ale)

'Brew Your Own British Real Ale' by Graham Wheeler and Roger Protz is my go-to book for recipes. It's kind of old, 1994 IIRC but all the recipes I've followed exactly came out really good. Besides clones of a lot of British beers from Fuller's, Young's, Eldrige Pope, etc; It has some good info and cool stuff like Bass's Bottling Instructions from 1880 that as they say in the book, "You would not go far wrong by following..."

I'll second the recommendation for Clone Brews and add that if you only have one homebrewing book it should be "Designing Great Beers" by Ray Daniels. While this is not a book of clones, it is essential when you start developing your own recipes, which I have no doubt you will at some point.

I second this, "Designing Great Beers" is an awesome book. I think once you get it, you may find that you are more interested in designing your own recipes or tweak some clones to your liking. The book also just gives some really cool history about different styles.